Alarms and KPIs Alarms and Events vSTP Alarms and Events (70000-70060, 70100-70999) 70221 - Failed to send message to TDM driver 70221 - Failed to send message to TDM driver Event Group: vSTP Description: This event is generated when sending message to TDM driver fails. Severity: Info Instance: <Link name> Auto Clear Seconds: 10 OID: vSTPMtp2FailedToSendMsgNotify Recovery: None. This event is shows that sending message to TDM driver fails. It is recommended to contact My Oracle Support for assistance, if needed.